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Finding the Fourth Proportional to 221,147.42, 305,174.40 and 124,348.52

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Solution

The fourth proportional to 221,147.42, 305,174.40 and 124,348.52 is: 171,595.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,147.42 : 305,174.40 = 124,348.52 : x
  2. Step 2: Convert to fraction form
    221,147.42/305,174.40 = 124,348.52/x
  3. Step 3: Cross multiply
    221,147.42x = 305,174.40 × 124,348.52
  4. Step 4: Simplify right side
    221,147.42x = 37,947,984,981.89
  5. Step 5: Solve for x
    x = 37,947,984,981.89/221,147.42
  6. Step 6: Final answer
    x = 171,595.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.